Question 177168
The properties of addition are: 
[1] Commutative Property 
[2] Associative Property 
[3] Additive Identity Property 
[4] Additive Inverse Property 
For each equation below, indicate the property that justifies the equation by filling in the box with the appropriate number.
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b=b+0
Ans: #3
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7+(6+y)=(7+6)+y
Ans: #2
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0=x+(-x)
Ans: 4
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Cheers,
Stan H.